PRECIOUS GEMS SOFTWARE
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Precious gemstones are not always rarer or more valuable, than semi-precious gemstones. Many people in the gem and jewellery industry do not like the terms precious and semi-precious, because they do not take into account the grade of the gemstone. A two carat diamond is larger than a two carat cubic zirconia and very much more expensive.įaceted amethyst. This means that cubic zirconium is heavier than diamond. For example, diamond has a specific gravity of 3.52 and a cubic zirconia, which looks very similar, has a specific gravity of 5.80. Most gemstones are harder than quartz (Mohs scale greater than 7) and cannot be scratched by the blade of a knife. Using properties of minerals such as habit, shape, lustre, light refraction and specific gravity we can tell the difference between similar looking gemstones. The test of a good gemstone is its resistance to wear and tear. Information on some of Australia's gemstones can be found at Google Arts and Culture - Gems from the Safe.

Australia is the world’s biggest producer of diamonds and opals and major supplier of sapphire, ruby, emerald, garnet, topaz and jade has also been mined in Australia. Geoscience Australia is the government's technical adviser on all aspects of geoscience, and custodian of the geographical and geological data and knowledge of the nation.Īustralia, with its long geological history, has some of the world’s oldest rocks and minerals and a wide variety of gemstones. The library provides services to geoscience organisations, universities, research centres, the mining and petroleum industries and the public. The National Mineral and Fossil Collection contains over 300,000 mineral, meteorite, fossil, and rock thin section specimens, with around 700 on permanent display in the foyer at Geoscience Australia.

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Client ServicesĪ wide range of spatial information products is available from the Geoscience Australia, from our retailer network or free from our website National Mineral and Fossil Collection Data Standardsĭata standards and symbols and reference databases. Movies and mobile apps produced by Geoscience Australia. List of links to Geoscience Australia's 3D models. Interactive Maps is a discovery and exploration view of Geoscience Australia's geospatial services. General and thematic maps of Australia including outline maps, bathymetric maps, geophysical maps and geological maps. Geoscience Australia provides web services for public use that allow access to our data without having to store datasets locally. Geoscience Australia maintains a number of online tools to promote the discovery and delivery of data. Search Geoscience Australia's extensive catalogue of data, publications, online tools, maps and videos. Geoscience Australia's digital publications. List of some of Geoscience Australia's most recent releases. Geoscience Australia provides information and advice towards the management of Australia's groundwater and surface water resources. Geoscience Australia is the national focal point for coordination of geodetic information and data, and maintains a national network of geodetic observatories which forms part of a global observatory network. Information regarding mineral and minerals exploration in Australia at national and regional scale, mining and land use, sustainable development of resources, and levels of exploration activity Positioning and Navigation Information regarding Australia's coasts and estuaries, seabed mapping and Antarctica. Historically, bushfires, floods, earthquakes and cyclones have caused loss of life and significant damage to property and infrastructure. Location information about Australia's dimensions, landforms and national mapping. Petroleum resources, coal resources, uranium and thorium resources, geothermal energy, renewable energy resources, basin geology, Acreage Release. Geoscience Australia provides Earth observation services, expert advice, and information for decision makers.

Information regarding various disciplines and techniques including: geochemistry, geochronology, geophysics and marine surveying.

PRECIOUS GEMS SOFTWARE

Our products include almanacs, software and web services providing precise astronomical data. Leaders in Earth science data, bringing the benefits of space to all Australians.